According to Sgt. John Howard, spokesman for the Phoenix Police Department, some people in the crowd began to throw rocks, bottles and other projectiles at police and someone in the crowd dispersed tear gas in the area.

Howard said the first gas that was dispersed came from someone in the crowd, not from police. Howard also said that some people in the crowd toppled the fencing that was meant to create a safe zone for protesters.

Police did make four arrests, three pertaining the protests and one on an unrelated warrant. The three arrested in relation to the protests were 28-year-old Daireus Stokes, 25-year-old Pamela Robertson and 34-year-old Derrick Pacheco.

Stokes was arrested for three counts of aggravated assault on police, three counts of disorderly conduct, one count of resisting arrest and three counts of threatening and intimidating.

Robertson was arrested for one count of aggravated assault on police and Pacheco was arrested for one count of disorderly conduct.

According to court documents, Stokes had a handgun with him and threatened officers before he was arrested.

Dozens of people spent Wednesday afternoon putting the finishing touches on their wagons for the annual Tucson Rodeo Parade. There are a total of 81 wagons in this year's parade. Close to 2,400 people and 560 horses will be walking in the parade as well.

Dozens of people spent Wednesday afternoon putting the finishing touches on their wagons for the annual Tucson Rodeo Parade. There are a total of 81 wagons in this year's parade. Close to 2,400 people and 560 horses will be walking in the parade as well.